# thirtieth

Pronunciation: say "THUR-tee-uhth" US /ˈθɝti.əθ/, UK /ˈθɜːti.əθ/

## Adjective

1. Holding the position that comes after the twenty-ninth in a counted sequence, matching the number thirty.
   - Simple: Coming right after the twenty-ninth in order, holding position number thirty in a list or count.
   - _The library celebrated its thirtieth year of serving the town._
   - _He scored his thirtieth goal of the season on Friday night._

## Noun

2. The person or thing occupying position number thirty in an ordered set or ranking.
   - Simple: The person or thing that comes thirtieth in order, right after the twenty-ninth.
   - _Among the candidates interviewed, she ranked thirtieth overall._
   - _The committee welcomed him as the thirtieth member to join since the club's founding._
3. Any one of thirty equal parts into which a whole is divided.
   - Simple: One part of something that is split into thirty equal parts.
   - _Each of the thirty heirs inherited a thirtieth of the estate._
   - _The recipe calls for a thirtieth of the spice mixture per serving._

## Origin

From earlier "thirteth," from Middle English "thrittithe," from Old English "þrītigoþa"; it is equivalent to "thirty" plus the suffix "-eth."

Source: DictionaryAI, https://dictionaryai.com/define/thirtieth (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).